2020+ Silverado HD & Sierra HD Troubleshooting

344 topics in this forum

1. 3.0 Duramax cranks but won’t start 1 2 3 4 14

   By Dbersuch, March 23
   • 199 replies
   • 26.1k views
   • 
   • Jacob D
   • 49 minutes ago

3. How to determine if new truck is being built

   By dquest, July 24
   • 12 replies
   • 379 views
   • 
   • elcamino
   • 1 hour ago

4. Trailer lights 1 2 3 4 5

   By Jordan94, August 24, 2019   

   • Towing
   • lights
   • (and 2 more)

     Tagged with:

     • Towing
     • lights
     • 2020hd
     • 6.6L Duramax
   • 61 replies
   • 34.4k views
   • 
   • Waggs160
   • 12 hours ago

5. Tailgate spontaneously opening 1 2 3

   By jsward12, February 26
   • 41 replies
   • 6.2k views
   • 
   • jsward12
   • 20 hours ago

6. Trailer Cameras Not Working 1 2

   By Bazel, February 19   

   • Trailer
   • camera
   • 20 replies
   • 3.2k views
   • 
   • skatville
   • Yesterday at 12:49 PM

7. Heads Up Display Dash Rattle

   By mts6175, Monday at 02:06 PM
   • 0 replies
   • 66 views
   • 
   • mts6175
   • Monday at 02:06 PM

8. 4 issues to be resolved 1 2

   By kylant, May 19
   • 15 replies
   • 1.9k views
   • 
   • Grjfer
   • Sunday at 04:03 PM

9. No Trailer Connected Issue

   By Leon Baehre, March 7, 2020
   • 6 replies
   • 6.7k views
   • 
   • Thomas Karr
   • Saturday at 05:47 PM

10. Dead battery...2020 L5P 1 2 3

    By Revspan, June 1, 2020
    • 37 replies
    • 12k views
    • 
    • papadop
    • Friday at 02:11 PM

11. 2021 GMC Sierra 2500 Trailer Light Issues - "Check Trailer Rear Lamp" Message

    By rickmc17, Thursday at 05:56 PM
    • 0 replies
    • 103 views
    • 
    • rickmc17
    • Thursday at 05:56 PM

12. Drivers Side Wide Angle Lower Mirror ?

    By GhostComanche, July 14
    • 4 replies
    • 459 views
    • 
    • Armgrim
    • July 28

13. key fob transmitter faulty? 1 2 3

    By FirstAscent, March 24, 2020
    • 33 replies
    • 9.8k views
    • 
    • Charlie4
    • July 27

14. Program Cluster message

    By KKDuramax, June 28
    • 1 reply
    • 473 views
    • 
    • Another JR
    • July 26

15. Multi Pro Tailgate Plug

    By hkyfsh, April 30
    • 2 replies
    • 727 views
    • 
    • jl374
    • July 23

16. 2020 Chevy 3500 - Remote start sound issue

    By Rguerra, July 21
    • 4 replies
    • 277 views
    • 
    • Random
    • July 23

17. Can you bolt/secure an item to the center console hump in a 2020 Silverado?

    By safetykirk, July 16
    • 1 reply
    • 240 views
    • 
    • JCunningham
    • July 23

18. 3.5" RC Lift 2" Rear blocks instead of 2.5"?

    By Brett Balcaen, July 20
    • 0 replies
    • 154 views
    • 
    • Brett Balcaen
    • July 20

19. Multi-Pro Tailgate Loose?

    By RugbyRef, July 14
    • 5 replies
    • 373 views
    • 
    • Grjfer
    • July 19

20. Brake pedal hard to push 1 2 3

    By gerald compton, August 13, 2020
    • 32 replies
    • 6.1k views
    • 
    • aliveguy5
    • July 19

21. Service ESC light coming on in hot weather

    By Nhcampbells, July 16
    • 2 replies
    • 231 views
    • 
    • Nhcampbells
    • July 17

22. Brakes Squeaking @ 10K 1 2 3 4 5

    By LarryM, September 16, 2020
    • 61 replies
    • 14.9k views
    • 
    • Tomato
    • July 15

23. 2021 GMC 3500 AT4 Power Running Boards

    By Fire1382fighter, June 29
    • 7 replies
    • 644 views
    • 
    • HiggySTL
    • July 15

24. Trailer running light issue

    By CCMC, July 12
    • 1 reply
    • 262 views
    • 
    • Bluedog
    • July 13

25. Hesitation or shudder/misfire?

    By BigBru, July 12
    • 0 replies
    • 273 views
    • 
    • BigBru
    • July 12

26. Trailer TPMS sensors loose signal 1 2 3 4 6

    By Andrew Best, September 9, 2020   

    • Tpms problems
    • TPMS trailer
    • 83 replies
    • 10.4k views
    • 
    • Reddingbob
    • July 11